Meter and controlling means for concrete mixers



y G. JAEGE R 1,769,881

v METER AND CONTROLLING MEANS FOR CONCRETE MIXERS Filed Jan. 14, 1929 5 49 46 151/9. 52 56 at? Smwntor 1 GEBHARD-JAEGER Gttornegs Patented at a, rese um'rsn sra'ras eAraNr orr ca GEBHARD JAEGER, OF COLUMBUS, OHIO METER .AN'ID CONTROLLING MEANS FOB CONCRETE MIZEBS Application filed January 1a, 1929. Serial m. 832,501.

This invention relates more especially to an attachment for a combined transporting and mixingtruck for concrete and more especially for taking unmixed materials of the concrete materials from a point of supply i and mixing them during transit to or at the point of deposit by means of the truck propelling means. In an application for atent of the United States filed by me on ovemher 30, 1928, havingSerial Number 322,640, is illustrated a combined transporting and mixing truck for concrete upon which there person'employed in handling the truck can-.

is loaded. By such means a driver or other for driving the rear wheels, and the usual controls for speed changing and reversing although not shown,

The rotatable mixing drum is shown at 21. Said drum is provided with peripherial 55 track bands 23 and 23 that reston or travel between flan ed rollers, 18 and 18" journaled in the truck rame 20. Said frame 20 is sup- .1 ported by the usual springs 20 attached to it and the axle so as to relieve shocks due 60 to rapid driving over rough roads or humps in goodroads. When the mixing drum is loaded with concrete materials, it together with the truck bed or frame, sink into a closer proximity to the axle than when 65 empty.

not operate the unloaded machine surrep titiously to make the register look as though it has been, in good faith, rotated to mix or partially mix the contents of the mixer.

' Other objects will appear from the disclosure herein.

The invention is embodied in the example herein shown and described, the'features of novelty being finally claimed.

In the accompanying drawing- Figure 1 is a view in side elevation and partly in section of enough of the truck mixer to illustrate the application of my present invention thereto.

Fig. 2 is a side view with parts broken out of the meter mechanism, the same being on a larger scale than appears in Fig. 1..

Fig. 3 is a plan view; on a smaller scale, of the chassis or truck frame containing the means for supporting and rotating the mixing drum. I

In the views 10 designates the truck, it consisting of any suitable motor vehicle and containing an engine, the propeller shaft 11 extending to the differential gear at the rear In the present instance the meter actuator arm 44 is provided with an anti-friction roller 44; and a lateral arm 44 that has connected to it one end of a chain or other suitable flexible member. 100, and its other end provided with a coil spring 101 connected with a suitable eye on the axle.

The length of the chain 100 and spring 101 is such that when the drum is not loaded the anti-friction roller of the arm 44 is held downward against the pull of the springs on said arm 44 and out of the path of the lug 45 when the drum is rotated. Hence in the empty condition of the drum no operation of 9 the metering or other register mechanism is effected by the rotations of the drum. But when thedrum is loaded or charged with the 'concrete materials, the springs operating on the actuator arm 44 tend to place that arm 8 in an upright position, or with the anti-friction roller lying in the path of the lug 45 so that when said drum is rotated the operation of said meter can be effected if the mechanism be otherwise set, as provided, to permit such operation. The spring 101 allows for bounds and rebounds of the truck frame with respect to the axle when the apparatus is being driven over roughnesses in the road. The mixing drum is driven by means of a power take-off shaft 16 adapted to be operated from the crank shaft of the engine gears in the box. In the present instance the power take-off shaft is geared to turn in one ternal to the housing and adapted to be struck by a lug on. the rotating drum; and an arm 46 within the housing carrying a pawl 47 adapted intermittently-to feed clockwise a ratchet wheel 48 also mounted on said central bearing. Also mounted on said central bearing carrying,the ratchet wheel is a detent lever ing the arm 46' and the axis of the ratchet wheel -is a volute coil spring 50' tending to turn the ratchet wheel anti-clockwise for the purpose of automatically restoring said wheel to its initial position.

Mounted to slide in holes in the'opposite end walls of the housing is a bar 51 provided with a notch 52 in its upper edge into which the arm 49 of the detent lever can be projected by a coil spring 53 to prevent the movement of said bar 51to the right. The coil spring 53 being connected with said. arm and the rear wall of the housing tends to hold said arm engaged with said notch until positively released.

As the ratchet wheel is fed clockwise by the rotations of the drum and adjustable arm 54 carried by that wheel eventually strikes the arm 50, removes the arm 49 of the detent lever from the notch 52 of the bar 51 as well as the feed pawl 47 and stop pawl 55 from the teeth 'of the wheel thereby permitting the ratchet wheel to return under the influence of the coil springs 50 to its original or starting position, such position being determined by the contact of an inwardly projecting pin 56 in the ratchet wheel with the internal arm 46. The arm 54 can be connected with any of a series of holes in the rim of the ratchet wheel so as to fix the metering number of movements of said wheel.

ratchet wheel by the pawl carrying arm 46 said pawl is restored to-position for an additional feed by a coil spring 57 connecting the arm 44 with the rear wall of the housing. This last described mechanism is somewhat similar to the mechanism in the patent of the United States issued December 3, 1929, No. 1,738,045 to The Jaeger Machine Company as assignee of Joseph Eggert.

Pivoted to the outer end of a bar 51 is an arm 58 having a beveled end 59 and two downward projections 60 and 61, the former shorter than the latter. The beveled end having arms 49 and 50; and connect After a feed of theof the bar 58 is supported in the slot of the bracket 58 fastened to the truck sill. The arm 58 governs the movement of the clutch operating lever 35, the lug 61 preventing the reversal of the rotation of the drum until the predetermined number of the rotations thereof has taken place.

Normally the clutch of the drum driving means stands in neutral position with the lever 35 between the lugs 60 and 61.. Upon the close of a metering operation the clutch operating lever 35 stands between the lugs (30 and 61, the arm 58 having dropped by rea on of its beveled end on the support 58 so hatthe lug 6O stands in the path of the levee. 35. Vhcn, therefore, the lever 35 is drawn forward to engage the double clutch with a'forward clutch jaw for a metered mixing rotation of the drum, the bar 51 and arm 58 are carried forward, the latter at the same time rising at its free end and permitting the detent arm 49 to engage said bars in the position indicated in Fig. 2, with the lever 35 slipping forward enough to lie under the lug 60. This insures firm retention of the detent by reason of the coiled retracting spring 71 connected with the arm and front cover of the meter' housing. From this position of the lever 35 the latter can only be moved rearward enough to put the double clutch in neutral position because obstructed by the projection 61. In other words the clutch operatlng lever 35 is prevented from operation to effect the engagement of the double clutch with drum rebring about discharging rotations of the drum because the projection 61 has been removed from obstructing position. The release of the arm 50 is followed b the release of the wheel-feeding and ho ding pawls thereby permitting the return of the ratchet wheel and attached arm 54 under the influence of the volute spring 50 to its initial or starting position.

The forms of the parts can be changed without departing from the gist of the invention as claimed.

What I claim is: s

1. A mixing element, a resilient support therefor, a metering element for the operations of the mixing element and means rendering the metering element operable by the action of the load in the mixing element on said resilient support.

2. A mixing element, a resilient-support Ill therefor, a metering element for the opera- 1 tions of the mixing element and means rendering the metering element operable by the action of the load, the mixing element on said support, and means for controlling the operation of the mixing element.

3. A mixing element, a resilient support therefor, a metering element for the operations of the mixing element and means rendering the meteringelement operable by the action of the load in the mixing element on the resilient support, and means for controlling the operation of the mixing element in cluding means for preventing the discharge operation of the mixing element until the metering element has been operated by the operation of the mixing element.

4. A mixing element, a truck, a resilient support on the truck for the mixing element, a metering device for the mixing operation of the mixing element and means rendering the metering device operable by the action of the load in the mixing element on the resillent support.

5. A mixing element, a truck, a resilient support on the truck for the mixing element,

a metering device for the mixing operation of the mixing element, means for rendering the metering device operable by the action of the l'oad in the mixing element on the resil lent support, and means for controlling the operation of the mixing element.

6. A mixing element, a truck, a resilient support on the truck for the mixing element, a metering device for the mixing operation of the mixing element, means for rendering the metering device operable by the action of the load in the mixing elementon the resilient support, and means for controlling the op-' eration of the mixing element including means for preventing the discharge operation of the mixing element until the metering device has been operated by the operation of the mixing element.

7 A rotary mixing element, a truck, a resilient support on the truck for the element, a metering element for the mixing operation of the mixing element, means rendering the metering element operable by the action of the load in the mixing element on the resilient support. I X p 8. A rotary mixin element, a truck, aresilient supporton the truck for the mixing element, a metering element for the mixing operation of themixing element, means rendering the metering element operable by the action of the load in the mixing element on the resilient support and means for operating and means for controlling the operation of the mixing element.

9. A rotary mixing element, a'truck, a

- resilient support on the truck for the mixing element, a metering element f for the, mixing operation of the mixing element, means rendering the metering element operable bythe action of the load in the mixing element on the resilient support and means for operating and means for controlling the operation of the mixing element including means for preventing the discharge operation of the mixing element until the metering element,

has been operated by the operation of the mixing element.

' 10. In aconcrete mixing apparatus, atruck, a mixing element and resilient means on the truck for supporting the mixing element, a metering element rendered operative by the action of the load in the mixing element on the resilient support, and means to prevent the operation of the meterin the mixing element is charge with concrete materials.

11. In a concrete mixing apparatus, a truck, a mixing element and resilient means on the truck for supporting the mixing element, a metering element for the mixing operations of the mixing eleelement until ment rendered operable by the load in the mixing element on said support, and means whereby said metering element is held out of operable position until the mixing element is loaded.

12. In a concrete mixing apparatus, 8' truck, a mixing element and resilient means on the truck for supporting the mixingelement, a metering element for the mixing operations of the mixing element, and means whereby. said metering element is held out of operable position until the mixing means is loaded, said means consisting of a member connected with the actuator of the metering mechanism and an axle of the truck.

13. In a concrete mixing apparatus, aitruck, a mixing element and resilient means on the truck for supporting the mixing element, a metering element for the mixing operations of the mixing element, and means whereby said metering element is held out of operable position until the mixing means is loaded said means consisting of a-flexible member. connected with the actuator of the metering element and an axle of the truck.

14. In a concrete mixing apparatus, a truck, a mixing element and resilient means on the truck for supporting the mixing element, a metering elementfor the mizn'ng operations of the mixing element, and means whereby said metering element is held out of operable position until the mixing means is loaded, said means consisting of a member connected with the actuator of themetering element and including a resilient element. 4

15. A motor driven truck, a rotary mixing element resiliently supported on the truck, said mixing element constructed to mix materials when rotated in one direction and to discharge the mixed materials when rotated in the opposite direction, means carried by the truck for rotating-said mixing element in either direction, a metering element, means for preventing discharge rotation of the mming element until the redetermined number of mixing rotations as been effected and means for holding the metering element out of operating osition until the mixing element is loaded? a 16. A motor driven truck, a rotary mixing element yieldingl supported on the truck as respects an axle t ereof, said mixing element constructed to mix materials when rotated in one direction and to discharge the mixed materials when rotatedin the opposite direction, means carried by the truck for rotating said mixing element in either direction, a metering element, means for preventing discharge rotation of the mixin element until a. predetermined number 0 mixing rotations has been effected, and means for holding the metering element out of operating position until the mixing element is loaded.

17. In a concrete mixing apparatus, a truck, a mixing element and resilient means on the truck for supporting the mixing element, a metering element for the mixing operations of the mixing element rendered 0perable by the load in the mixing element on said support, and yielding means whereby said metering element is held out of operable position until the mixing element is loaded.

GEBHARD JAEGEB. 

